Longjiang Bridge

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Longjiang Bridge
龙江大桥
Wuhexiang, Yunnan, China
958 feet high / 292 meters high
3,924 foot span / 1,196 meter span
2016

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The Longjiang River is the largest obstacle along the S10 Baoteng spur expressway that branches off from the G56 to the city of Tengchong in western Yunnan Province. To get across the 300 meter deep river gorge, the engineers have designed the longest span high bridge on earth with a tower to tower distance of 3,924 feet (1,196 meters) - nearly as long as the Golden Gate Bridge. Longjiang surpassed the distance of both Aizhai and Balinghe Bridges which previously held the long span record honors among the world's highest bridges.

The Longjiang crossing is also unique among China's big mountain suspension bridges with a thin steel box girder deck that breaks away from the traditional truss deck used on earlier bridges like Siduhe, Balinghe, Lishuihe and Aizhai. Yunnan's Puli Bridge also has a steel box deck. The tallest tower on Longjiang Bridge measures 167 meters in height.


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Longjiang Bridge Elevation


龙川江峡谷是S10保腾高速公路上的最大障碍,该高速公路是G56杭瑞高速公路的支线,将云南西部城市腾冲和杭瑞高速连接起来。为跨越这道300米深的峡谷,工程师们设计了世界跨度最大的山区桥梁,桥塔之间的主跨达到1196米,几乎和金门大桥一样长。龙江大桥刷新了此前由矮寨和坝陵河大桥保持的世界山区高桥跨径纪录。


龙江大桥使用钢箱梁,这在中国山区大跨径悬索桥中是首次应用。以往的四渡河、坝陵河、澧水、矮寨等大桥均使用钢桁梁。云南另一座高桥普立大桥也使用钢箱梁。龙江大桥较高一侧桥塔高167米。

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Image by Eric Sakowski / HighestBridges.com


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Documentary Filming


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LongjiangSurfboard.jpg

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A hexacopter brings across the first cable.


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Early truss deck proposal.


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Longjiang Bridge deck cross section.


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Longjiang Bridge tower elevations.


LongjiangCableCrossSec.jpg

The main cable cross section showing the order in which the smaller hexagon bundles will be placed during the process of cable spinning.


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A number of borings were made at different points on the river slopes. The pieces are numbered to show the ground composition at progressively deeper elevations. The location of the borings are indicated by highway kilometer points.


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Longjiang Bridge and highway location map.


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A satellite view of the Longjiang Bridge site with the main span drawn in.

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